I love this movie to death. I started watching the anime at the beginning of 2012 once I saw the first episode online then proceeded to purchase Season One, Two and the movie. While I do love the show, it all just feels like a prologue to this movie. It all flows perfectly and really is a thank you to the fans.
I am saying this because for those who have not seen the show, I can imagine that this movie would be extremely confusing. It constantly references events from the show and interweaves certain aspects of the plot around it. This movie can still be enjoyed by people who have not seen the show but many things will be missed or misunderstood. This movie is not a stand alone piece of content. It is something that needs context to be enjoyed and that context is acquired from the show.
In short, watch both seasons of the show before watching this movie and you will discover one of the greatest movies ever made.
I am saying this because for those who have not seen the show, I can imagine that this movie would be extremely confusing. It constantly references events from the show and interweaves certain aspects of the plot around it. This movie can still be enjoyed by people who have not seen the show but many things will be missed or misunderstood. This movie is not a stand alone piece of content. It is something that needs context to be enjoyed and that context is acquired from the show.
In short, watch both seasons of the show before watching this movie and you will discover one of the greatest movies ever made.